and it comes ten days after her husband urged the court to overturn the law, which he signed in 1996. the arc of mrs. clinton's changed opinion reflects a turnaround of public sentiment. in 2004, only 30% of americans supported same-sex marriage. by december of last year, the same nbc news wall street journal poll showed a majority in favor. >> the world has just transformed itself on this issue, including the political world. >> reporter: on friday, republican senator rob portman came out in favor of same-sex marriage. >> i now believe people ought to have the right to get married. >> reporter: a position most of his party oppose, but this morning after a report declared the party need to do broaden its appeal, the party launched a $10 million vopledge to reach its votes. president obama has also changed his position, announcing his support of same-sex marriage last year and a new poll just today shows 58% of americans agree. brian? >> kristin welker at the white house for us tonight. kristin, thanks. >>> still ahead for us on a monday evening, a major break in one of this nation's l